U.S. patent application number 13/067173 was filed with the patent office on 2012-05-10 for battery module.
Invention is credited to Myung-Chul Kim, Tae-Yong Kim, Shi-Dong Park.
Application Number | 20120115015 13/067173 |
Document ID | / |
Family ID | 46019929 |
Filed Date | 2012-05-10 |
United States Patent
Application |
20120115015 |
Kind Code |
A1 |
Park; Shi-Dong ; et
al. |
May 10, 2012 |
Battery module
Abstract
A battery module includes a plurality of rechargeable batteries
having terminals, bus bars electrically connecting the terminals of
the rechargeable batteries, connection parts protruding from the
bus bars, and transmission wires electrically connecting the
connection parts to a battery management system (BMS), the
transmission wires being configured to transmit voltages of the
rechargeable batteries to the BMS.
Inventors: |
Park; Shi-Dong; (Yongin-si,
KR) ; Kim; Tae-Yong; (Yongin-si, KR) ; Kim;
Myung-Chul; (Yongin-si, KR) |
Family ID: |
46019929 |
Appl. No.: |
13/067173 |
Filed: |
May 13, 2011 |
Current U.S.
Class: |
429/159 |
Current CPC
Class: |
H01M 10/425 20130101;
H01M 50/50 20210101; H01M 50/528 20210101; Y02E 60/10 20130101;
H01M 50/502 20210101; H01M 50/209 20210101; H01M 50/543
20210101 |
Class at
Publication: |
429/159 |
International
Class: |
H01M 2/10 20060101
H01M002/10; H01M 10/02 20060101 H01M010/02 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 5, 2010 |
KR |
10-2010-0109804 |
Claims
1. A battery module, comprising: a plurality of rechargeable
batteries having terminals; bus bars electrically connecting the
terminals of the rechargeable batteries; connection parts
protruding from the bus bars; and transmission wires electrically
connecting the connection parts to a battery management system
(BMS), the transmission wires being configured to transmit voltages
of the rechargeable batteries to the BMS.
2. The battery module as claimed in claim 1, wherein each
connection part includes a connection protrusion extending from a
side of a respective bus bar.
3. The battery module as claimed in claim 2, wherein the connection
part further comprises a wire socket connected to the connection
protrusion, the wire socket being configured to grip a transmission
wires inserted thereinto.
4. The battery module as claimed in claim 3, wherein the wire
socket includes: a combination part connected to the connection
protrusion and to a support plate by a bolt; and a pressed fixation
part extending from the combination part and configured to grip the
transmission wire therein.
5. The battery module as claimed in claim 2, wherein the connection
protrusion is connected to a support plate by a bolt.
6. The battery module as claimed in claim 2, wherein each of the
connection protrusions protrudes from a longitudinal side of a
corresponding bus bar, the bus bar electrically connecting two
rechargeable batteries.
7. The battery module as claimed in claim 2, wherein each of the
connection protrusions protrudes from a longitudinal side of a
corresponding bus bar, the bus bar electrically connecting four
rechargeable batteries.
8. The battery module as claimed in claim 1, further comprising a
protecting member positioned between the bus bars and the
rechargeable batteries.
9. The battery module as claimed in claim 8, further comprising a
housing holding the rechargeable batteries, the protecting member
being mounted on the housing.
10. The battery module as claimed in claim 8, wherein the
protecting member includes a support plate with holes, the support
plate being on the rechargeable batteries, and the holes
penetrating the support plate to expose the terminals of the
rechargeable batteries.
11. The battery module as claimed in claim 10, further comprising
guide members on the support plate, the guide members being
configured to guide the transmission wires to the BMS.
12. The battery module as claimed in claim 11, wherein the guide
members include bent portions of the support plate that define
holes, the transmission wires being inserted through the holes of
the guide members to be guided toward the BMS.
13. The battery module as claimed in claim 11, wherein the guide
members are linearly disposed on an upper surface of the support
plate toward the BMS.
14. The battery module as claimed in claim 13, wherein the
connection parts are separated from the support plate to have a
height corresponding to positions of the holes of the guide
members.
15. The battery module as claimed in claim 8, further comprising
gas exhaust holes in the protecting member, the gas exhaust holes
being positioned on gas exhaust members of the rechargeable
batteries.
16. The battery module as claimed in claim 1, wherein surfaces of
the bus bars are coated with tin.
17. The battery module as claimed in claim 1, further comprising a
support plate covering a top of the battery module, each bus bar
being connected to the support plate via a respective connection
part.
18. The battery module as claimed in claim 17, wherein each
transmission wire is connected to the corresponding bus bar via a
combination hole in the respective connection part.
Description
BACKGROUND
[0001] 1. Field
[0002] The described technology relates generally to a battery
module, and more particularly, to a battery module capable of
easily checking current and voltage of a rechargeable battery.
[0003] 2. Description of the Related Art
[0004] A rechargeable battery is a battery that can be charged and
discharged, i.e., unlike a primary battery that is not chargeable.
Low-capacity rechargeable batteries may be used for small-sized
portable electronic devices, e.g., a portable phone, a notebook
computer, and a camcorder, and high-capacity batteries may be
widely used as power sources for driving motors, e.g., of hybrid
cars and so on.
[0005] Recently, high-output rechargeable batteries using
high-energy-density non-aqueous electrolytes have been developed,
and the high-output rechargeable batteries are formed as
high-capacity battery modules by connecting a plurality of
rechargeable batteries in series. Such battery modules may be used
to drive an apparatus requiring a large amount of power, e.g.,
motors of electrical cars.
[0006] A battery module may include a plurality of rechargeable
batteries connected in series, and each rechargeable battery may be
formed, e.g., in a cylindrical shape, a prismatic shape, etc. The
rechargeable battery may be connected to a BMS (battery management
system) to detect and manage a charge voltage.
[0007] The above information disclosed in this Background section
is only for enhancement of understanding of the background of the
described technology and therefore it may contain information that
does not form the prior art that is already known in this country
to a person of ordinary skill in the art.
SUMMARY
[0008] An exemplary embodiment provides a battery module. The
battery module may include a plurality of rechargeable batteries
having terminals, bus bars electrically connecting the terminals of
the rechargeable batteries, connection parts protruding from the
bus bars, and transmission wires electrically connecting the
connection parts to a BMS, the transmission wires being configured
to transmit voltages of the rechargeable batteries to the BMS.
[0009] Each connection part may include a connection protrusion
extending from a side of a respective bus bar.
[0010] The connection part may further include a wire socket
connected to the connection protrusion, the wire socket being
configured to grip a transmission wires inserted thereinto.
[0011] The wire socket may include a combination part connected to
the connection protrusion and to a support plate by a bolt, and a
pressed fixation part extending from the combination part and
configured to grip the transmission wire therein.
[0012] The connection protrusions may be connected to a support
plate by a bolt.
[0013] Each of the connection protrusions may protrude from a
longitudinal side of a corresponding bus bar, the bus bar
electrically connecting two rechargeable batteries.
[0014] Each of the connection protrusions may protrude from a
longitudinal side of a corresponding bus bar, the bus bar
electrically connecting four rechargeable batteries.
[0015] The battery module may further include a protecting member
positioned between the bus bars and the rechargeable batteries.
[0016] The battery module may further include a housing holding the
rechargeable batteries, the protecting member being mounted on the
housing.
[0017] The protecting member may include a support plate with
holes, the support plate being on the rechargeable batteries, and
the holes penetrating the support plate to expose the terminals of
the rechargeable batteries.
[0018] The battery module may further include guide members on the
support plate, the guide members being configured to guide the
transmission wires to the BMS.
[0019] The guide members may include bent portions of the support
plate that define holes, the transmission wires being inserted
through the holes of the guide members to be guided toward the
BMS.
[0020] The plurality of guide members may be linearly disposed on
an upper surface of the support plate toward the BMS.
[0021] The connection parts may be separated from the support plate
to have a height corresponding to positions of the holes of the
guide members.
[0022] The battery module may further include gas exhaust holes in
the protecting member, the gas exhaust holes being positioned on
gas exhaust members of the rechargeable batteries.
[0023] Surfaces of the bus bars may be coated with tin.
[0024] The battery module may further include a support plate
covering a top of the battery module, each bus bar being connected
to the support plate via a respective connection part.
[0025] Each transmission wire may be connected to the corresponding
bus bar via a combination hole in the respective connections
part.
BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The above and other features and advantages will become more
apparent to those of ordinary skill in the art by describing in
detail exemplary embodiments with reference to the attached
drawings, in which:
[0027] FIG. 1 illustrates a perspective schematic view of a battery
module according to a first exemplary embodiment.
[0028] FIG. 2 illustrates an enlarged partial perspective view of a
part of FIG. 1.
[0029] FIG. 3 illustrates a schematic enlarged view of a wire
socket according to an example embodiment.
[0030] FIG. 4 illustrates a schematic enlarged view of a guide
member according to an example embodiment.
[0031] FIG. 5 illustrates a perspective schematic view of a part of
a battery module according to a second exemplary embodiment.
[0032] FIG. 6 illustrates a schematic perspective view of a part of
a battery module according to a third exemplary embodiment.
DETAILED DESCRIPTION
[0033] Korean Patent Application No. 10-2010-0109804, filed on Nov.
5, 2010, in the Korean Intellectual Property Office, and entitled:
"Battery Module," is incorporated by reference herein in its
entirety.
[0034] Example embodiments will now be described more fully
hereinafter with reference to the accompanying drawings; however,
they may be embodied in different forms and should not be construed
as limited to the embodiments set forth herein. Rather, these
embodiments are provided so that this disclosure will be thorough
and complete, and will fully convey the scope of the invention to
those skilled in the art.
[0035] In the drawing figures, the dimensions of layers and regions
may be exaggerated for clarity of illustration. It will also be
understood that when a layer (or element) is referred to as being
"on" another layer or substrate, it can be directly on the other
layer or substrate, or intervening layers may also be present. In
addition, it will also be understood that when a layer is referred
to as being "between" two layers, it can be the only layer between
the two layers, or one or more intervening layers may also be
present. Like reference numerals refer to like elements
throughout.
[0036] FIG. 1 illustrates a schematic perspective view of a battery
module according to a first exemplary embodiment. FIG. 2
illustrates an enlarged partial perspective view of FIG. 1.
[0037] As shown in FIGS. 1 and 2, a battery module 100 according to
the first exemplary embodiment may include a plurality of
rechargeable batteries 10 having terminals 11 protruding outward, a
plurality of bus bars 20 electrically connecting the terminals 11
of the rechargeable batteries 10, connection parts 40 protruding
from sides of the bus bars 20, transmission wires 50 electrically
connecting the connection parts 40 and transmitting voltage of the
rechargeable batteries 10 to a BMS (battery management system) 21,
and a protecting member 30 positioned between the bus bars 20 and
the rechargeable batteries 10.
[0038] A case where the rechargeable batteries 10 are prismatic
lithium ion rechargeable batteries will be described as an example.
However, example embodiments are not limited thereto and are
applicable to various forms of batteries, e.g., lithium polymer
batteries or cylindrical batteries.
[0039] A rechargeable battery 10 may include a case 12 holding an
electrode assembly (not shown), and terminals 11 protruding from
the electrode assembly and outward from the case 12. Also, the
rechargeable battery 10 may further include a gas exhaust member 13
having a notch which may open at a set pressure to exhaust a gas.
The terminals 11 may include a positive electrode terminal 11a
electrically connected to a positive electrode of the electrode
assembly, and a negative electrode terminal 11b electrically
connected to a negative electrode of the electrode assembly. For
example, the case 12 may be formed of metal, e.g., aluminum, an
aluminum alloy, etc., and may have a prismatic shape, e.g., a
rectangular parallelepiped shape.
[0040] The plurality of rechargeable batteries 10 may be arranged
adjacent to each other, e.g., may be stacked in a line in one
direction (an x-axis direction of FIG. 1), such that major surfaces
of the rechargeable batteries 10 may face each other. For example,
the rechargeable batteries 10 may be arranged so terminals 11 of
adjacent rechargeable batteries 10 may have alternating polarities.
The plurality of rechargeable batteries 10 may be arranged in a
housing 19.
[0041] The rechargeable batteries 10 may be connected in series by
the bus bars 20, e.g., the rechargeable batteries 10 may be
connected in series by connecting terminals 11 of adjacent
rechargeable batteries 10. For example, each bus bar 20 may be
connected to the positive electrode terminal 11a of one
rechargeable battery 10 and to the negative electrode terminal 11b
of a neighboring rechargeable battery 10 at a state in which the
positive electrode terminals 11a and the negative electrode
terminals 11b of the neighboring rechargeable batteries 10 are
alternately arranged. In another example, in the case in which the
rechargeable batteries 10 are disposed to have terminals of a same
polarity lie next to each other, e.g., all positive terminals 11a
may be aligned at one side of the battery module 100 and all
negative terminals 11b may be aligned at an opposite side of the
battery module 100, the bus bars 20 may connect the rechargeable
batteries 10 to each other in parallel.
[0042] Referring to FIG. 2, holes 20a may be formed in edges of a
bus bar 20 in the longitudinal direction to allow the terminals 11
to be inserted therethrough. The bus bar 20 may be mounted on a
base member 15 put on the terminal 11, and the bus bar 20 may be
fixed to the terminal 11 by a nut 17. In this case, the base member
15 may include a nut fastened to the terminal. As described above,
a lower surface of the bus bar 20 may contact the base member 15
and an upper surface of the bus bar 20 may contact the nut 17.
[0043] The protecting member 30 may include a support plate 31
having a plate shape, and a plurality of protruding parts 33
protruding through the support plate 31. The protruding parts 33
may be formed around circumferences of the bus bars 20.
[0044] As shown in FIG. 1, the support plate 31 may have a shape
corresponding to the battery module 100, e.g., a substantially
rectangular plate shape, and may be combined with an opening of the
housing 19, e.g., the support plate 31 may be fixed to the housing
19 by a bolt 14. The support plate may overlap an entire opening of
the housing 19, so holes 35 may be formed in the support plate 31
to allow the terminals 11 to be inserted therethrough. The positive
and negative terminals 11a and 11b of two adjacent rechargeable
batteries 10 may extend through two adjacent holes 35 of the
support plate 31, so the bus bar 20 may be inserted onto the
positive and negative terminals 11a and 11b to provide serial
connection and overlap the holes 35. One protruding part 33
surrounds the two adjacent holes 35 with the connected terminals
inserted therethrough.
[0045] The protruding part 33 may include a protecting protrusion
33a having a rib shape surrounding a bus bar 20, and a guide
protrusion 33b formed to extend from both ends of the protecting
protrusion 33a toward the center in the width direction of the
support plate 31. In detail, the protecting protrusion 33a may
include arc-shaped parts formed at the both edges and a linear part
connecting the arc-shaped parts to surround the bus bar 20.
Therefore, it may be possible to prevent or substantially minimize
short circuits between adjacent, i.e., neighboring, bus bars 20,
and to prevent or substantially minimize the terminals 11 or the
bus bars 20 from being electrically connected to an external
conductor, e.g., a tool during work. The guide protrusion 33b
functions to protect a wire connected to a terminal 11 or a bus bar
20 for measuring a current and voltage, as will be discussed in
more detail below.
[0046] As illustrated in FIG. 1, current output terminals 16 and 18
for outputting current to the outside may be provided at opposite
ends of the battery module 100 to correspond to respective positive
and negative terminals 11a and 11b. The positive and negative
terminals 11a and 11b connected to the current output terminals 16
and 18 may not be connected to any bus bar 20, and rib-shaped
protruding parts 36 and 37 may protrude from the support plate 31
to surround terminals 11a and 11b, respectively, for
protection.
[0047] A reinforcing rib 39 may be formed to protrude along an edge
on the support plate 31. The reinforcing rib 39 prevents or
substantially minimizes the support plate 31 from being deformed or
damaged, e.g., due to an external impact, etc.
[0048] Referring to FIG. 2, gas exhaust holes 13a may be formed in
the support plate 31, and the gas exhaust holes 13a may be
positioned on the gas exhaust members 13 of the rechargeable
batteries 10. Gas protrusions 13b may be formed along
circumferences of the gas exhaust holes 13a, i.e., to extend along
and surround the gas exhaust holes 13a. Therefore, when the gas
exhaust members 13 are opened, an internal gas of the rechargeable
batteries 10 may be rapidly exhausted through the gas exhaust holes
13a and the gas exhaust protrusions 13b.
[0049] As illustrated in FIG. 2, the connection part 40 may
protrude from a side of a bus bar 20. The connection part 40 is a
member for connecting to the rechargeable battery 10 the
transmission wire 50 for measuring current and voltage of the
rechargeable battery 10. The connection part 40 may include a
connection protrusion 41 protruding from a side of the bus bar 20
and a wire socket 43 connected to the connection protrusion 41 and
for fixing the transmission wire 50.
[0050] The connection protrusion 41 may protrude from the bus bar
20, e.g., from a central position along a lateral longitudinal side
of the bus bar 20. The connection protrusion 41 may be positioned
at any angle with respect to the longitudinal direction of the bus
bar 20, e.g., the connection protrusion 41 may be perpendicular to
the longitudinal direction of the bus bar 20, thereby connecting
the transmission wire 50 at any angle to the bus bar 20.
[0051] The connection protrusion 41 may include a combination hole
41a at its edge, i.e., at a terminal end, so the combination hole
41a and the bus bar 20 may be at opposite ends of the connection
protrusion 41. The combination hole 41a may be combined with a bolt
member 42. Therefore, the connection protrusion 41 of the bus bar
20 may be reliably fixed, i.e., connected, by the bolt member 42
through the combination hole 41a to the support plate 31. As a
result, the bus bar 20 may be stably fixed at its position and may
avoid, e.g., shaking due to an external impact, etc. Further, the
bus bar 20 may reliably transmit the current and voltage of the
rechargeable battery 10 to the BMS 21 through the transmission wire
50.
[0052] In the first exemplary embodiment, a case where one
combination hole 41a is formed in the connection protrusion 41 has
been described as an example, but two or more combination holes may
be formed. If two or more combination holes 41a are formed in the
connection protrusion 41, the connection between the bus bar 20 and
the support plate 31 may be more reliable.
[0053] The wire socket 43 may be used for connecting the
transmission wire 50, and may be combined with the connection
protrusion 41. The wire socket 43 will be described in more detail
with reference to FIG. 3.
[0054] FIG. 3 illustrates an enlarged view of the wire socket 43.
As shown in FIG. 3, the wire socket 43 may include a combination
part 43a and a pressed fixation part 43b.
[0055] Referring to FIG. 3, the combination part 43a refers to a
part, e.g., directly, connected with the connection protrusion 41.
That is, the combination part 43a may include a through-hole 43c,
so the through-hole 43c may be aligned with and connected to the
combination hole 41a of the connection protrusion 41 via the bolt
member 42 to the support plate 31. The combination part 43a and the
connection protrusion 41 may be connected by fastening the bolt
member 42 in a state in which the through-hole 43c and the
combination hole 41a are connected with each other.
[0056] The pressed fixation part 43b may be formed to protrude as
one body with the combination part 43a. That is, the pressed
fixation part 43b may be integral with the combination part 43a,
and may extend, e.g., linearly, from the combination part 43a. A
part of the transmission wire 50 may be inserted into and fixed by
the pressed fixation part 43b. In detail, a part of the pressed
fixation part 43b may be curved in the longitudinal direction
thereof to form a pressed hole 43d. Therefore, if a part of the
transmission wire 50 is inserted into the pressed hole 43d of the
pressed fixation part 43b and then the pressed fixation part 43b is
pressed to reduce the diameter of the pressed hole 43d, the
transmission wire 50 may be reliably combined with, e.g., gripped
by, the pressed fixation part 43b. In other words, the pressed
fixation part 43b may have sidewalls, e.g., flexible sidewalls,
surrounding a hollow tunnel, i.e., the pressed hole 43d, so the
transmission wire 50 may be inserted through the hollow tunnel,
i.e., through the pressed hole 43d, followed by pressing the
sidewalls of the pressed fixation part 43b. Pressing the sidewalls
of the pressed fixation part 43b may minimize the diameter of the
pressed hole 43d, thereby securing the sidewalls of the pressed
fixation part 43b firmly around the transmission wire 50 in the
pressed hole 43d.
[0057] The connection part 40 may be positioned at a predetermined
height h from an upper surface of the support plate 31, such that
the transmission wires 50 may be separated from the support plate
31 by the predetermined distance. This is for preventing the
transmission wire 50 from being brought into contact with the
support plate 31.
[0058] As shown in FIG. 1, the transmission wires 50 may be
connected to the bus bars 20 via the connection parts 40, and may
transmit the current and voltage of the rechargeable batteries 10
to the BMS 21. One transmission wire 50 may connect one bus bar 20
to the BMS 21. That is, the transmission wires 50 may include a
plurality of wires, i.e., a number of the transmission wires 50 may
equal the number of the bus bars 20, connected to the BMS 21. This
is for enabling the BMS 21 to separately sense the voltage and
current of the rechargeable battery 10 connected to each bus bar
20. The configuration and operation of the BMS 21 is well-known,
and thus, a description thereof will be omitted below.
[0059] The transmission wires 50 may be guided toward the BMS 21 by
guide members 60, as will be described in more detail with
reference to FIG. 4. FIG. 4 illustrates an enlarged view of the
guide members 60.
[0060] As shown in FIG. 4, the guide members 60 may be formed by
slitting parts of the support plate 31 and bending the slit parts
into shapes of holes 61 having an opening on one side. That is,
portions of the support plate 31 may be cut to form the slit parts,
and the slit parts may be curved above openings 65 to define the
holes 61, e.g., the holes 61 may be positioned at the height h to
be at a same height level as the connection parts 40. As such, the
transmission wires 50 may be inserted through the holes 61 of the
guide members 60 to be guided between the BMS 21 and respective bus
bars 20. Reference numeral 63 denotes protectors for preventing
foreign substances from flowing into the openings 65 in the support
plate 31.
[0061] The plurality of guide members 60 may be linearly disposed
on the upper surface of the support plate 31 along the longitudinal
direction of the battery module 100. Therefore, the guide members
60 may reliably guide the transmission wires 50 toward the MBS 21,
while preventing interference with adjacent components.
[0062] Tinning may be performed on the bus bars 20 of the first
exemplary embodiment to coat the surfaces thereof. Coating of the
surfaces of the bus bars 20 with tin may make contact resistance
conditions between the bus bars 20 and the terminals 11
substantially the same, so as to sense the currents and voltages of
the rechargeable batteries 10 more accurately.
[0063] FIG. 5 illustrates a partial perspective view of a battery
module according to a second exemplary embodiment. The identical
reference numerals as those in FIGS. 1 to 4 denote identical
elements, and therefore, detailed description thereof may not be
repeated.
[0064] Referring to FIG. 5, in a battery module 200 according to
the second exemplary embodiment, the bus bars 20 may not include
the protruding parts 33 of the first exemplary embodiment.
Therefore, according to the battery module 200 of the second
exemplary embodiment, it may be possible to use spaces
corresponding to the protruding parts 33 and to improve a degree of
freedom of design.
[0065] FIG. 6 illustrates a partial perspective view of a battery
module according to a third exemplary embodiment. The identical
reference numerals as those in FIGS. 1 to 5 denote identical
elements, and therefore, detailed description thereof may not be
repeated.
[0066] As shown in FIG. 6, in a battery module 300 according to the
third exemplary embodiment, four rechargeable batteries 10 may be
electrically connected to each other by one bus bar 220. More
specifically, the bus bar 220 may connect in parallel two pairs of
serially connected rechargeable batteries 10. That is, two
rechargeable batteries 10 may be disposed to have the positive
electrode terminals 11a thereof next to each other, and two
additional rechargeable batteries 10 may be disposed to have the
negative electrode terminals 11b thereof next to each other. For
this, four holes 220a may be formed in the bus bar 220, and the
terminals 11a and 11b may be inserted into the holes 220a. Nuts 17
may be combined with the terminals 11a and 11b in the state in
which the bus bar 220 is mounted on the terminals 11a and 11b,
thereby fixing the bus bar 220 to the terminals 11a and 11b.
[0067] According to the exemplary embodiments, a battery module may
include a connection part extending from the bus bar. As such, the
transmission wire may be connected to the connection part to
transmit voltage and current of the rechargeable battery to the
BMT, thereby preventing faulty connection of the transmission wire
and perform a reliable connection. In contrast, a conventional
rechargeable battery may have a complicated and an unreliable
connection to the BMS, thereby causing a faulty connection.
[0068] Example embodiments have been described above with reference
to the exemplary embodiments shown in the drawings. However,
example embodiments are not limited thereto but various
modifications or other exemplary embodiments included within the
spirit and scope of the example embodiments will be apparent to
those skilled in the art. Accordingly, the actual scope of example
embodiments are intended to be defined by the following claims.
TABLE-US-00001 <Description of symbols> 10 Rechargeable
battery 11 Terminal 11a Positive electrode terminal 11b Negative
electrode terminal 12 Case 13 Gas exhaust member 13a Gas exhaust
hole 13b Gas exhaust protrusion 14 Bolt 15 Base member 17 Nut 19
Housing 20 Bus bar 20a Hole 21 BMS 30 Protecting member 31 Support
plate 33 Protruding part 40 Connection part 41 Connection
protrusion 41a Combination hole 43 Wire socket 43a Combination part
43b Pressed fixation part 50 Transmission wire 60 Guide member 63
Protector 65 Opening
* * * * *